Air sterilization and disinfection device

Abstract

The invention relates to the technical field of air sterilization and disinfection, in particular to an air sterilization and disinfection device. The device comprises a pipeline unit, an ultraviolet unit and a supporting unit. In the pipeline unit, the reflecting coating is coated on the pipeline body. The photocatalyst is coated in the pipeline body and distributed in a spiral line mode. And the lamp holder of the ultraviolet unit extends along the axial direction of the pipeline body. The central axis of the lamp holder coincides with the central axis of the pipeline body. The lamp beads are distributed in the circumferential direction and the axial direction of the lamp holder at intervals. One end of the supporting unit is fixedly connected with the inner wall of the pipeline body, and the other end is fixedly connected with the outer wall of the lamp holder. And a gap is formed between the supporting unit and the lamp bead. The air sterilization and disinfection device further comprises a disinfection state. In the disinfection state, the ultraviolet light source emitted by the lamp beads irradiates the photocatalyst, and the photocatalyst releases reactants to the inner space of the pipeline body. And at least part of ultraviolet light emitted by the lamp beads irradiates the photocatalyst through the reflective coating. Therefore, the problem of how to improve the air sterilization and disinfection effect is solved.

Description

Technical Field

[0001] The invention relates to the technical field of air sterilization and disinfection, and in particular to an air sterilization and disinfection device. Background Art

[0002] Under the current technical background, sterilizing and disinfecting the air in confined spaces has become an important means to prevent the spread of diseases. This demand is particularly prominent in confined environments such as public areas such as classrooms, airports, and stations, family spaces such as bedrooms and living rooms, and in-car spaces such as private cars, buses, and trains. In order to meet this demand, a series of air sterilizers with deep ultraviolet light sources and air conditioner vent sterilization and disinfection devices with deep ultraviolet light sources have appeared on the market. These devices effectively kill bacteria, viruses and other microorganisms in the air by utilizing the bactericidal properties of deep ultraviolet light, thereby achieving the purpose of reducing the risk of disease transmission. Among them, the air sterilizer is usually placed in a corner of a confined space, and the entire space is sterilized and disinfected by circulating air; while the air conditioner vent sterilization and disinfection device embeds the deep ultraviolet light source into the vent of the air conditioner, and sterilizes and disinfects the air by using the air supply process of the air conditioner.

[0003] However, there are still some problems with the existing air sterilization and disinfection technology. First, the air sterilization and disinfection machine will take up a certain amount of space when placed, which is undoubtedly a waste for a closed environment with limited space. Secondly, although the sterilization and disinfection device of the air-conditioning vent can use the process of air supply of the air conditioner to sterilize and disinfect, the addition of a deep ultraviolet light source will increase the wind resistance of the air conditioner, thereby affecting the air supply efficiency and energy consumption of the air conditioner. In addition, in order to improve the sterilization effect, the existing air sterilization and disinfection device often embeds multiple ultraviolet light strips on the inner wall of the pipeline and increases the coverage area of ​​the photocatalyst, which not only increases the complexity and production cost of the device, but also may have a certain impact on the stability and safety of the equipment. Therefore, how to solve the above problems while ensuring the sterilization and disinfection effect has become a key issue that needs to be urgently solved in the current air sterilization and disinfection technology. Summary of the invention

[0004] In order to solve the problem of how to improve the sterilization and disinfection effect of air, the present invention provides an air sterilization and disinfection device, comprising:

[0005] A pipeline unit, the pipeline unit comprising a pipeline body, a reflective coating, and a photocatalyst; the reflective coating is coated on the pipeline body; the photocatalyst is coated on the pipeline body and distributed in a spiral line;

[0006] An ultraviolet unit, the ultraviolet unit comprising a lamp holder and lamp beads; the lamp holder extends along the axial direction of the pipe body; the central axis of the lamp holder coincides with the central axis of the pipe body; the lamp beads are arranged at intervals along the circumference of the lamp holder; the lamp beads are distributed at intervals along the axial direction of the lamp holder;

[0007] A support unit, one end of which is fixedly connected to the inner wall of the pipe body, and the other end of which is fixedly connected to the outer wall of the lamp holder; a gap is provided between the support unit and the lamp beads;

[0008] The air sterilization and disinfection device also includes a disinfection state; the disinfection state includes the ultraviolet light source emitted by the lamp bead irradiating the photocatalyst, and the photocatalyst releasing reactants into the internal space of the pipe body; at least part of the ultraviolet light source emitted by the lamp bead irradiates the photocatalyst through the reflective coating.

[0009] In some embodiments, one end of the photocatalyst is in contact with the inner wall of the pipe body, and the other end extends away from the inner wall of the pipe body; a plurality of the photocatalysts are spirally distributed on the inner wall of the pipe body around the central axis of the pipe body.

[0010] In some embodiments, the thickness of the photocatalyst gradually decreases from the center toward the edge of the outer contour.

[0011] In some embodiments, the lamp beads are spirally distributed on the lamp frame around the central axis of the lamp frame.

[0012] In some embodiments, the support unit includes a support body; one end of the support body is fixedly connected to the inner wall of the pipe body, and the other end is fixedly connected to the outer wall of the lamp holder; the support body is spirally distributed around the central axis of the lamp holder; the support body and the lamp beads are spaced apart.

[0013] In some embodiments, a plurality of ventilation holes are provided on the support body.

[0014] In some embodiments, the pipe body includes a middle section; the middle section is coated with the reflective coating; and a plurality of the photocatalysts are spirally distributed on the inner circumferential wall of the middle section around the central axis of the middle section.

[0015] In some embodiments, the pipe body further includes an inlet section; an inner circumferential wall of the inlet section is coated with the reflective coating.

[0016] In some embodiments, the pipe body further includes an outlet section; the inner circumferential wall of the outlet section is coated with the reflective coating; and the photocatalyst is coated on the reflective coating and distributed in a spiral pattern.

[0017] In some embodiments, the air sterilization and disinfection device further includes a fan unit; the fan unit is connected to one end of the pipe body; the disinfection state further includes the fan unit delivering air to the internal space of the pipe body.

[0018] In order to solve the problem of how to improve the sterilization and disinfection effect of air, the present invention has the following advantages:

[0019] By setting up an ultraviolet unit, and the central axis of the ultraviolet unit coincides with the central axis of the pipeline body, and emitting ultraviolet light sources to the surroundings through the lamp beads on the lamp holder, the ultraviolet light source can be used to fully and evenly irradiate the photocatalyst on the inner wall of the pipeline body, thereby ensuring the illumination area and improving the sterilization and disinfection effect, while avoiding the problems of increased costs and increased device complexity caused by the use of multiple ultraviolet units. In addition, the photocatalyst is distributed in a spiral line on the inner wall of the pipeline body, which can not only save costs, but also guide air circulation, reduce flow resistance, and extend the air flow path, so that microorganisms in the air can more fully contact the photocatalyst, further improving the sterilization and disinfection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A schematic diagram of an air sterilization and disinfection device according to an embodiment is shown;

[0021] Figure 2 A partial schematic diagram of the air sterilization and disinfection device of the first embodiment is shown;

[0022] Figure 3 A partial schematic diagram of an air sterilizing and disinfecting device according to a second embodiment is shown;

[0023] Figure 4 A partial schematic diagram of an air sterilizing and disinfecting device according to a third embodiment is shown;

[0024] Figure 5 A partial schematic diagram of an air sterilizing and disinfecting device according to a fourth embodiment is shown;

[0025] Figure 6 A partial schematic diagram of an air sterilizing and disinfecting device according to a fifth embodiment is shown;

[0026] Figure 7 A partial schematic diagram of an air sterilizing and disinfecting device according to a sixth embodiment is shown;

[0027] Figure 8 A partial schematic diagram of a support unit of an embodiment is shown.

[0028] Figure numerals: 01 pipeline unit; 11 pipeline body; 111 inlet section; 112 middle section; 113 outlet section; 12 reflective coating; 13 photocatalyst; 02 ultraviolet unit; 21 lamp holder; 22 lamp beads; 03 support unit; 31 support body; 32 vent; 04 fan unit. DETAILED DESCRIPTION

[0029] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0030] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure. It can be a mechanical connection or an electrical connection. It can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0031] In the present embodiment, in the field of air sterilization and disinfection, traditional devices often adopt a method of embedding multiple ultraviolet light strips on the inner wall of the pipe and coating a large area of ​​photocatalyst 13 to achieve air sterilization and disinfection. However, this method not only increases the complexity and production cost of the device, but also the distribution of the ultraviolet light strips and the photocatalyst 13 is not uniform enough, resulting in a limited illumination area and a less than ideal sterilization and disinfection effect. In addition, the large-area use of ultraviolet light strips and photocatalysts 13 may also increase the resistance to air flow and affect the air circulation efficiency. Therefore, how to optimize the layout of ultraviolet light strips and photocatalysts 13, increase the illumination area and sterilization and disinfection effect, and reduce production costs and air flow resistance, has become a technical problem that needs to be urgently solved in current air sterilization and disinfection devices. The present embodiment discloses an air sterilization and disinfection device, such as Figure 1 As shown, the air sterilization and disinfection device may include a pipeline unit 01, an ultraviolet unit 02, and a support unit 03. Figure 2 As shown, the pipeline unit 01 may include a pipeline body 11, a reflective coating 12, and a photocatalyst 13. The cross-sectional shape of the pipeline body 11 may be rectangular, circular, or other polygonal. The reflective coating 12 is coated on the pipeline body 11. The reflective coating 12 is a metal material with high light reflectivity, such as aluminum, aluminum-magnesium alloy, silver, etc. Its function is to reflect the ultraviolet light emitted by the ultraviolet unit 02, thereby improving the sterilization efficiency of the air in the pipeline body 11. Figure 3As shown, the photocatalyst 13 is coated in the pipe body 11 and distributed in a spiral line. The photocatalyst 13 is formed by nanoparticles, and its composition can be TiO2, ZnO, CdS, WO3, Fe2O3, PbS, SnO2, ZnS, SrTiO3, SiO2, etc., and its scale is between 1nm-50μm. The photocatalyst 13 produces strong oxidizing substances (hydroxyl radicals, oxygen, etc.) under light, which can efficiently decompose toxic organic compounds such as formaldehyde, toluene, and xylene, and convert them into harmless substances (such as carbon dioxide, water, etc.). In addition, its strong oxidizing property also has a certain bactericidal and disinfecting effect, thereby playing a role in purifying the air. The ultraviolet unit 02 may include a lamp holder 21 and lamp beads 22. The lamp holder 21 extends along the axial direction of the pipe body 11. The central axis of the lamp holder 21 coincides with the central axis of the pipe body 11. The lamp beads 22 are arranged at intervals along the circumference of the lamp holder 21. The lamp beads 22 are distributed at intervals along the axial direction of the lamp holder 21. The lamp bead 22 can emit an ultraviolet light source, and its luminous wavelength is less than 300nm. It destroys the DNA or RNA of bacteria and viruses in the air in the pipeline body 11 through high-energy ultraviolet irradiation, and kills bacteria and viruses efficiently. One end of the support unit 03 can be fixedly connected to the inner wall of the pipeline body 11, and the other end is fixedly connected to the outer wall of the lamp holder 21. There is a gap between the support unit 03 and the lamp bead 22. Thereby, the ultraviolet unit 02 is fixed on the central axis position of the pipeline body 11. The air sterilization and disinfection device can also include a sterilization state. The sterilization state includes the ultraviolet light source emitted by the lamp bead 22 irradiating the photocatalyst 13, and the photocatalyst 13 releases reactants into the internal space of the pipeline body 11. At least part of the ultraviolet light source emitted by the lamp bead 22 is irradiated onto the photocatalyst 13 through the reflective coating 12. By coordinating the pipe unit 01, the ultraviolet unit 02 and the support unit 03, and realizing the disinfection state, the illumination area can be ensured, the sterilization effect can be improved, and at the same time, the use cost of the photocatalyst 13 and the ultraviolet unit 02 can be saved, the air circulation can be guided, the flow resistance can be reduced and the air flow path can be extended.

[0032] In other embodiments, Figure 2 , Figure 3 , Figure 4 As shown, when the material of the pipe body 11 is an opaque material, such as plastic or metal, the reflective coating 12 can be coated on the inner wall of the pipe body 11, and the photocatalyst 13 can be coated on the reflective coating 12, which can eliminate the risk of light leakage while ensuring high light reflection efficiency to improve the sterilization efficiency. Figure 5 , Figure 6 As shown, when the pipe body 11 is made of a light-transmitting material, such as light-transmitting plastic, glass, quartz, etc., the reflective coating 12 can be coated on the outer wall of the pipe body 11, and the photocatalyst 13 can be coated on the inner wall of the pipe body 11, which is convenient for processing and avoids the reflective coating 12 and the photocatalyst 13 affecting each other during coating, thereby improving processing efficiency.

[0033] In this embodiment, if Figure 6 As shown, when the pipe body 11 is made of a light-transmitting material, one end of the photocatalyst 13 can be attached to the inner wall of the pipe body 11, and the other end can extend in a direction away from the inner wall of the pipe body 11. Figure 7 As shown, a plurality of photocatalysts 13 can be spirally distributed on the inner peripheral wall of the pipe body 11 around the central axis of the pipe body 11. Through this arrangement, the airflow can be further guided, the flow resistance can be reduced, and the air flow path can be extended, thereby improving the sterilization effect.

[0034] In this embodiment, if Figure 3 , Figure 6 As shown, the thickness of the photocatalyst 13 can be gradually reduced from its center toward its outer edge. The photocatalyst 13 is streamlined to reduce flow resistance, allowing air to pass through the pipe unit 01 more smoothly while ensuring the sterilization effect.

[0035] In this embodiment, if Figure 4 , Figure 7 As shown, the lamp beads 22 can be spirally distributed on the lamp frame 21 around the central axis of the lamp frame 21. This spiral distribution of the lamp beads 22 can cooperate with the photocatalyst 13 to further guide the airflow, making the air flow in the pipeline unit 01 more uniform, thereby improving the sterilization effect.

[0036] In this embodiment, if Figure 2 , Figure 3 As shown, the support unit 03 may include a support body 31. One end of the support body 31 may be fixedly connected to the inner wall of the pipe body 11, and the other end may be fixedly connected to the outer wall of the lamp holder 21. The support body 31 may be spirally distributed around the central axis of the lamp holder 21. The support body 31 and the lamp beads 22 are spaced apart. This spiral distribution of the support body 31 may cooperate with the photocatalyst 13 to further guide the airflow, reduce the flow resistance, and improve the air circulation efficiency.

[0037] In this embodiment, if Figure 8 As shown, a plurality of vent holes 32 may be provided on the support body 31. By providing the vent holes 32, the flow resistance may be further reduced, so that the air can pass through the support unit 03 more smoothly, thereby improving the sterilization and disinfection effect of the entire air sterilization and disinfection device.

[0038] In this embodiment, if Figure 1 As shown, the pipe body 11 may include a middle section 112. The middle section 112 is coated with a reflective coating 12. A plurality of photocatalysts 13 may be spirally distributed on the inner circumferential wall of the middle section 112 around the central axis of the middle section 112. By arranging a plurality of photocatalysts 13 in the middle section 112, the disinfection effect can be enhanced and the airflow can be guided, so that the air flows more evenly in the pipe body 11.

[0039] In this embodiment, if Figure 1 As shown, the pipe body 11 may further include an inlet section 111. The inner peripheral wall of the inlet section 111 is coated with a reflective coating 12. The inlet section 111 is only coated with the reflective coating 12, which can avoid wasting the energy of the light source and enhance the sterilization effect of the ultraviolet light source. At the same time, the reflective coating 12 can also reflect the ultraviolet light source to other areas in the pipe body 11, further improving the sterilization effect.

[0040] In this embodiment, if Figure 1 As shown, the pipe body 11 may also include an outlet section 113. The inner circumferential wall of the outlet section 113 is coated with a reflective coating 12. The photocatalyst 13 is coated on the reflective coating 12 and distributed in a spiral line. The outlet section 113 is provided with only one spiral distribution of the photocatalyst 13, which is convenient for coating. The pipe body 11 in different areas is provided with different coating methods, which can reduce the investment cost of the photocatalyst 13 while ensuring the sterilization effect.

[0041] In this embodiment, if Figure 1 As shown, the air sterilization and disinfection device may further include a fan unit 04. The fan unit 04 may be connected to one end of the pipeline body 11. The sterilization state may also include the fan unit 04 delivering air to the inner space of the pipeline body 11. Through the driving action of the fan unit 04, air may be sucked into the pipeline body 11 for sterilization and disinfection to purify the air. This arrangement may make the air sterilization and disinfection device more efficient and practical.

[0042] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. An air sterilization and disinfection device, characterized in that: The air sterilization and disinfection device comprises: A pipeline unit, the pipeline unit comprising a pipeline body, a reflective coating, and a photocatalyst; the reflective coating is coated on the pipeline body; the photocatalyst is coated on the pipeline body and distributed in a spiral line; An ultraviolet unit, the ultraviolet unit comprising a lamp holder and lamp beads; the lamp holder extends along the axial direction of the pipe body; the central axis of the lamp holder coincides with the central axis of the pipe body; the lamp beads are arranged at intervals along the circumference of the lamp holder; the lamp beads are distributed at intervals along the axial direction of the lamp holder; A support unit, one end of which is fixedly connected to the inner wall of the pipe body, and the other end of which is fixedly connected to the outer wall of the lamp holder; a gap is provided between the support unit and the lamp beads; The air sterilization and disinfection device also includes a disinfection state; the disinfection state includes the ultraviolet light source emitted by the lamp bead irradiating the photocatalyst, and the photocatalyst releasing reactants into the internal space of the pipe body; at least part of the ultraviolet light source emitted by the lamp bead irradiates the photocatalyst through the reflective coating.

2. An air sterilization and disinfection device according to claim 1, characterized in that: One end of the photocatalyst is in contact with the inner circumferential wall of the pipe body, and the other end extends in a direction away from the inner circumferential wall of the pipe body; a plurality of the photocatalysts are spirally distributed on the circumferential wall of the pipe body around the central axis of the pipe body.

3. An air sterilization and disinfection device according to claim 2, characterized in that: The thickness of the photocatalyst gradually decreases from the center toward the edge of the outer contour.

4. The air sterilization and disinfection device according to claim 2, characterized in that: The lamp beads are spirally distributed on the lamp frame around the central axis of the lamp frame.

5. The air sterilization and disinfection device according to claim 2, characterized in that: The support unit comprises a support body; one end of the support body is fixedly connected to the inner wall of the pipe body, and the other end is fixedly connected to the outer wall of the lamp holder; the support body is spirally distributed around the central axis of the lamp holder; the support body and the lamp beads are spaced apart.

6. An air sterilization and disinfection device according to claim 5, characterized in that: The support body is provided with a plurality of ventilation holes.

7. An air sterilization and disinfection device according to claim 2, characterized in that: The pipe body comprises a middle section; the middle section is coated with the reflective coating; and a plurality of photocatalysts are spirally distributed on the inner circumferential wall of the middle section around the central axis of the middle section.

8. An air sterilization and disinfection device according to claim 7, characterized in that: The pipeline body also includes an inlet section; the inner peripheral wall of the inlet section is coated with the reflective coating.

9. An air sterilization and disinfection device according to claim 8, characterized in that: The pipe body also includes an outlet section; the inner circumferential wall of the outlet section is coated with the reflective coating; the photocatalyst is coated on the reflective coating and distributed in a spiral line.

10. The air sterilization and disinfection device according to claim 1, characterized in that: The air sterilization and disinfection device also includes a fan unit; the fan unit is connected to one end of the pipeline body; the disinfection state also includes the fan unit transporting air to the internal space of the pipeline body.

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